[llvm] [BOLT] Fix LSDA section handling (PR #71821)

[Rafael Auler via llvm-commits]

https://github.com/rafaelauler approved this pull request.

Code looks good but I would drop the test case, because it makes us depend on a compiler that generates a section named .gcc_except_table.main. If you really want to check that a binary has a specific section name, and you are using a linker script, just create the section with that name in your linker script:

  .gcc_except_table.main : { *(.gcc_except_table*) }
  


https://github.com/llvm/llvm-project/pull/71821